Datasheet Summary
System-Side Single-Cell Fuel Gauge
1 General Description
The RT9426A Li-Ion/Li-Polymer battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell battery packs. The RT9426A resides within the battery pack or on the system's main board and manages a non-removable battery or removable battery pack.
The RT9426A uses the Voltaic Gauge with Current Sensing (VGCS) algorithm to report State of Charge (SOC), State of Health (SOH), Full Charge Capacity (FCC), Time to Empty (TTE), and Cycle Count. It calculates the increasing or decreasing state of charge based on the voltage difference between the battery voltage and Open Circuit Voltage (OCV), and...